How do you evaluate #-\frac { 7} { 2} \times \frac { 2} { 7}#?

1 Answer
EZ as pi
Apr 20, 2017

#-1#

Explanation:

When you are multiplying fractions, if you cancel like factors first, there will be no simplification to be done at the end. This means that the numbers stay smaller and are therefore easier to work with.

#-cancel7^1/cancel2^1 xx cancel2^1/cancel7^1#

#-1#

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